Cap
Ready-Made Cap
PiEEG recommends the Nylon EEG Cap (opens in a new tab). It is made from a comfortable nylon material and comes pre-configured for use with all PiEEG devices.
DIY Cap
Can use any comfortable caps for you, or create your own cap (DIY cap). Here you can find step-by-step instructions (opens in a new tab) on how to do that.
All PiEEG devices have a connection Connector Header Through Hole - 2.54 mm, so if you use some other caps, you need to confirm that the connectors have the same view

To connect the Header in PiEEG devices, which have the following pins

Electrode Placement
Whether using dry or wet electrodes, place them according to the international 10-20 system — the standard method for consistent, reproducible EEG electrode positioning across sessions and subjects.

Choosing the Right Cap
| Cap Type | Setup Required | Compatibility | Best For |
|---|---|---|---|
| PiEEG Nylon Cap | None | All PiEEG devices | Recommended starting point for most users |
| Third-Party Cap | Verify 2.54 mm connector | Must confirm pin pitch | Custom fit, specific channel counts |
| DIY Cap | Build from instructions | 2.54 mm pin pitch required | Experimentation, custom layouts, low cost |